Espar diesel htr blows white smoke

[Porchhound]

Not certain why exhaust from espar is blowing white smoke. My last boat had one and that didn't happen. Out of caution I shut it down. Any ideas. This was a fix based on survey and supposedly it ran fine.

[mark_53]

Possibly condensation in the exhaust.  Do you have a low point drain in the exhaust?

[Porchhound]

I'll check. That would make sense with the rainy weather.

[waughoo]

It might need a good run on high.  With what you've said about this boat sitting for so long, it likely hasn't had much use. 

[scgunner]

Porchhound,

How much white smoke? A wisp or is it billowing or something in between? Is it smoke or steam which could be caused by a cooling system blockage like an impeller vane that came adrift and got lodged in a downstream elbow. Smoke could indicate a bigger problem.

[waughoo]

Gunner... he is talking about his Espar cabin heater.

Porch... despite gunners confusion, his questions would be valuable information to have. 

[Porchhound]

Thanks for the feedback. After running for awhile the white smoke disappeared and the heater worked fine, so it must have been condensation.